Serene Siren, a mature lesbian with a penchant for younger partners, and Cassie Del Isla, her teenage protégé, find their tennis lessons taking a tantalizing turn when Spencer Bradley, their instructor, joins in. The threesome begins innocently enough, but as the sun beats down and the bodies heat up, the lines between student and teacher blur. Spencer watches, captivated, as Serene and Cassie's lesbian passion unfolds, their tongues flicking out to taste each other, their hands roaming over toned flesh. Unable to resist any longer, Spencer joins them, his cock slipping into Cassie's tight, eager pussy while Serene watches, her fingers buried deep inside her own needy cunt.